<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>多媒体标签</title>
  <style>
    video {
      width: 100%;
    }
  </style>
</head>

<body>
  <video src="./media/mi.mp4" controls muted loop poster="./media/mi9.jpg"></video>
</body>

</html>